On Thursday, everyone in the northern half of our planet will experience the summer solstice. It'll be the longest day of the year north of the Equator, and it is the scientific start of summer.
The sun's height in the sky each day changes because Earth spins on an axis that is tilted 23.5 degrees away from vertical, leading to seasonal variations based on hemisphere lean towards or away from the sun.
[
Collection
]
[
|
...
]